Permit #: C20-1043
Project: Aloft Hotel
Date: 2020 April 16
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PERMIT STATUS
02/04/2020 – F&G approved. Review still in progress.
02/14/2020 – F&F review complete. Comments issued.
02/20/2020 – F&F issued.
04/16/2020 – Building review complete. Comments issued.
ADVISORY COMMENT (NO RESPONSE REQUIRED)
This review is based on the requirements of the Anchorage Municipal Code (AMC), 2012 International Building Code (IBC), 2012 International Residential Code (IRC) and all adopted references thereto as amended by MOA. The following comments must be addressed before a permit can be issued. The approval of plans and specifications does not permit the violation of the codes, or any federal, state or local regulations.
F&F COMMENTS (02/14/2020)
Note: Resolve comments below for at-risk F&F approval.
02/20/2020 – Comments resolved. F&F issued.
BUILDING COMMENTS (04/16/2020)
Note: Resolve comments below for full structural approval.
4. STRUCTURAL PLANS
Provide full structural submittal for review.
03/13/2020 – Comment resolved. Full structural plans and calculations submitted.
5. FIRE PROTECTION
The code summary on sheet A0.01 indicates structural elements such as columns and trusses require 1 hour protection, but protection provided is specified as 0 hours. Why is the protection less than required?
[Reference: IBC 2012 Table 601]
04/16/2020 – Comment referred to Architectural/Fire plan review.
6. STEEL BEAM CONNECTORS
Detail 7/S3.08 calls for a 1/4” fillet weld to attach the Simpson SBC to the steel beam. The load tables provided by Simpson indicate an SBC with 1/4” fillet has the capacity for 13.8 kips. Some locations (such as Grid 15.4/B-C on S2.24 are calling for design uplift loads in excess of this (17k).
7. CALCULATIONS
a. On Page 83 of 312 of the calculation package, the RISA model shows a W24x68 beam along Grid 11 while S2.22 calls out a W24x62. Please clarify the beam design.
b. Page 83: Along Grid 1.8, this 4x10 is shown as two separate beams in the RISA model, where it appears to be one span on S2.21 and S2.31. Similar beams at openings on this line are 3.5x14LVLs. Is the intersecting end of the 5.125x9 GLB expected to provide intermediate support for the 4x10 here? Please verify the intent.
c. Page 91: Beams along Grid F.6 are 3.5x14LVL in the RISA model, but 5.125x9 GLB on the plans. Please confirm this is an acceptable substitution.
d. Page 98, 100: The RISA results indicate 8x16 beams are overstressed. This size of beam doesn't appear to be used in the design. Please clarify.
e. Page 101: Several beams are overstressed in the shear check.
f. Page 111: Several wood posts are shown as 6x8 at 92.5% of capacity. From the schedule on S3.05, there doesn't appear to any 6x8 posts. Please verify the designs.
8. STRUCTURAL PLANS
a. Sheet S2.11: Grid dimensions along the top of the page are overlapping. Recommend fixing this for clarity.
b. There seems to be a conflict between the minimum required NS grout strength between S1.01 and S3.04 (5000 vs 7000 psi).
c. Sheet S2.02 has a bold dashed line along Grid H... does this represent anything or is it a duplicate from other sheets?
d. Sheet S3.07: There are two details labeled 8/S3.07. Is this the intent? It might lead to conflicting references.
9. DEFERRED SUBMITTALS (NO RESPONSE REQUIRED)
The following items have been listed as deferred submittal items on sheet S1.03:
· Holdown System
· Wood Trusses
· Roofing Attachment
· Mechanical Unit Restraint
· Swimming Pool Design
· Porte Coche Structural Design
· Upper Roof Framing
All deferred submittals must be sealed by a Professional Engineer licensed in the State of Alaska. Submittals must be reviewed for general conformance by the Registered Design Professional prior to submitting to Building Safety for review. Deferred submittals must be reviewed and approved by Building Safety prior to installation/construction.
[Reference: AMC § 23.10.104.11]
Please provide a written response to the comments and include one copy of additional or revise calculations, and two copies of additional or revised drawings. While not required it is extremely helpful to the reviewer if the response indicates where in the submittal each comments has been addressed.
All submittals should be sent to the permit manager.
